What are the uses of the anode and cathode materials for lithium batteries?

The use of anode and cathode materials for lithium batteries ●The use of cathode materials for cathode materials has always been the core of lithium batteries. They have a higher electrode potential relative to lithium, which can ensure that the battery has a higher open circuit voltage. Each positive electrode material has its theoretical energy density. When a positive electrode material is selected, the upper limit of the energy density of the cell is selected. The amount design of the positive electrode material and the tap density in the production process also have an impact on the energy density of the finished battery cell. The cathode material of lithium battery should exert the best performance in the whole battery. Under the premise of optimizing the material composition, the crystal structure, particle structure and morphology of the material, particle surface chemistry, material packing density and compaction density should be further optimized. Chemical properties, and at the same time, we must strictly prevent the introduction of trace metal impurities in the process. Of course, stable, high-quality large-scale processing is an important guarantee for the stable performance of materials in battery manufacturing. ●Use of negative electrode material The negative electrode of lithium battery is made by mixing the negative active material carbon material or non-carbon material, binder and additives to make a paste glue evenly smeared on both sides of copper foil, dried and rolled. Whether the lithium battery can be successfully manufactured, the key lies in the preparation of a negative electrode material that can reversibly release/intercalate lithium ions. A more ideal negative electrode material must have at least the following 7 conditions: ①The chemical potential is low, forming a large potential difference with the positive electrode material to obtain a high-power battery; ②It should have a higher cycle specific capacity; ③Li+ in the negative electrode material It should be easy to intercalate and deintercalate, with high Coulombic efficiency, so that there can be a more stable charge and discharge voltage during the Li+ deintercalation process; ④have good electronic conductivity and ion conductivity; ⑤have good stability, right The electrolyte has a certain degree of compatibility; ⑥The source of materials should be rich in resources, low in price, and simple in manufacturing process; ⑦Safe, green and pollution-free. Disclaimer: Some pictures and content of articles published on this site are from the Internet. If there is any infringement, please contact to delete. Previous post: How to assemble a lithium battery?